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Gas spindle

An air-floating spindle and spindle technology, which is applied to bearings, shafts, bearings, instruments, etc., can solve the problems of insufficient air-floating force, unstable air source, and limit the load capacity of objects, so as to expand the weight range and improve reliability. Effect

Active Publication Date: 2013-08-14
中船西安东仪科工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, with the application of technology and advanced production technology, corresponding problems have followed, because factors such as unstable air source and insufficient air buoyancy limit the carrying capacity of objects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment is a large-load air bearing spindle applied to the Y901200D large-load roundness-waviness instrument. Including main shaft 6, upper end cover plate 2, lower end cover plate 8 and shaft sleeve parts.

[0016] Both ends of the main shaft 6 are connected with an upper end cover 2 and a lower end cover 8 . A shaft sleeve composed of an outer sleeve 4 and an inner sleeve 5 is fitted on the main shaft 6, and the main shaft and the shaft sleeve are loosely fitted. The loading platform 1 is located above the upper end plate 2 and is fixedly connected with the upper surface of the upper end plate 2 . The lower end of the main shaft part is connected with the motor. There is an air passage connected between the outer jacket 4 and the inner sleeve 5, and the arrangement of the air passage adopts the prior art. A nozzle 7 is embedded at the end of each gas path.

[0017] Such as figure 1 As shown, there are two groups of annular uniformly distributed nozzles 7 ...

Embodiment 2

[0021] This embodiment is applied to the air bearing spindle of the Y9030D roundness-waviness instrument. Including main shaft 6, upper end cover plate 2, lower end cover plate 8 and shaft sleeve parts.

[0022] Both ends of the main shaft 6 are connected with an upper end cover 2 and a lower end cover 8 . A shaft sleeve composed of an outer sleeve 4 and an inner sleeve 5 is fitted on the main shaft 6, and the main shaft and the shaft sleeve are loosely fitted. The loading platform 1 is located above the upper end plate 2 and is fixedly connected with the upper surface of the upper end plate 2 . The lower end of the main shaft part is connected with the motor. There is an air passage connected between the outer jacket 4 and the inner sleeve 5, and the arrangement of the air passage adopts the prior art. A nozzle 7 is embedded at the end of each gas path.

[0023] Such as figure 1 As shown, there are two groups of annular uniformly distributed nozzles 7 on both ends of the...

Embodiment 3

[0027] This embodiment is applied to the air bearing spindle of the DY300 cylindricity measuring instrument. Including main shaft 6, upper end cover plate 2, lower end cover plate 8 and shaft sleeve parts.

[0028] Both ends of the main shaft 6 are connected with an upper end cover 2 and a lower end cover 8 . A shaft sleeve composed of an outer sleeve 4 and an inner sleeve 5 is fitted on the main shaft 6, and the main shaft and the shaft sleeve are loosely fitted. The loading platform 1 is located above the upper end plate 2 and is fixedly connected with the upper surface of the upper end plate 2 . The lower end of the main shaft part is connected with the motor. There is an air passage connected between the outer jacket 4 and the inner sleeve 5, and the arrangement of the air passage adopts the prior art. A nozzle 7 is embedded at the end of each gas path.

[0029] Such as figure 1 As shown, there are two groups of annular uniformly distributed nozzles 7 on both ends of ...

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Abstract

The invention relates to a gas spindle which comprises a loading platform and a rotatable spindle body. The rotatable spindle body comprises an upper end cover plate, a spindle and a lower end cover plate. A spindle sleeve comprising an outer sleeve and an inner sleeve is sleeved on the spindle body; a plurality of nozzles are distributed on the inner surface and the end face of the inner sleeve in a staggered mode; and a gas chamber is arranged between a nozzle end of each nozzle and the upper end cover plate and between the lower end cover plate and the spindle. The gas chamber is formed insuch a way that the end face of the nozzles at the end faces of the both ends of the inner sleeve is 0.02mm lower than the end faces of both ends of the inner sleeve, or a concave surface with the diameter of 3mm to 5mm is processed at the center of the end face of the nozzle. The gas spindle is additionally provided with the gas chamber, the defect of widening the weight range of measurable objects is overcome, and the invention is suitable for high-precision machining tools and high-precise instrument measurement systems, such as gear measurement centers, roundness-waviness measuring instruments, cylindricity measurement instruments, and the like.

Description

technical field [0001] The invention relates to a rotatable device which utilizes the action of hydrodynamics to make the workpiece be in a non-contact state stably, in particular to an air-floating main shaft. Background technique [0002] At present, the most widely used in precision instruments is to use fluid mechanics to move the workpiece under test or the sensors used for measurement. Through the rotatable structure of air floatation, the movable parts can be rotated by the buoyancy of the gas and kept stable. In recent years, with the application of technology and advanced production technology, corresponding problems have followed, because factors such as unstable air source and insufficient air buoyancy limit the carrying capacity of objects. Contents of the invention [0003] In order to overcome the shortage of limited bearing capacity in the prior art, the present invention proposes an air-floating main shaft. [0004] The invention includes a rotatable shaft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06G01B13/18G01B13/16G01B13/12
Inventor 雷文泽白九成张红艳张恒林虎藉文武
Owner 中船西安东仪科工集团有限公司
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